curl --request GET \
  --url https://api.loopreturns.com/api/v1/inventories \
  --header 'X-Authorization: <api-key>'

{
  "inventories": [
    {
      "available_count": 123,
      "product_variant": [
        {
          "id": 123,
          "external_id": "<string>",
          "sku": "<string>",
          "name": "<string>",
          "weight_grams": 123,
          "barcode": "<string>"
        }
      ],
      "location": [
        {
          "id": 123,
          "external_id": "<string>",
          "name": "<string>",
          "address": [
            {
              "name": "<string>",
              "company": "<string>",
              "address1": "<string>",
              "address2": "<string>",
              "city": "<string>",
              "region": "<string>",
              "postal_code": "<string>",
              "country_code": "<string>"
            }
          ]
        }
      ]
    }
  ],
  "next_page_url": "<string>",
  "previous_page_url": "<string>"
}